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TIGSource ForumsCommunityDevLogsXeno Crisis - a new game for the Sega Mega Drive / Genesis and Dreamcast
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Author Topic: Xeno Crisis - a new game for the Sega Mega Drive / Genesis and Dreamcast  (Read 5061 times)
BitmapBureau
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« on: December 19, 2017, 07:11:50 PM »



OVERVIEW
Xeno Crisis is a new, original title for the Sega Mega Drive / Genesis and Dreamcast which will be released both as a physical cartridge and also as a downloadable ROM. At its core, it's an arena shooter for up to 2 players that takes inspiration from the likes of Smash TV, Aliens, Contra, Mercs, Granada, Alien Syndrome, Zombies Ate My Neighbours, Chaos Engine, and Shock Troopers.

We want the game to look, feel and sound like the classic Mega Drive games of the '80s and '90s, but also add some new elements that weren't so common in games of that era, particularly procedural map generation and randomisation of gameplay elements. Achieving that classic look and feel is vitally important to us, which is why we've teamed up with legendary pixel artist Henk Nieborg, who previously worked on the Mega Drive title "The Misadventures Of Flink", developed by Psygnosis. We're also working with "Savaged Regime"; a highly renowned chip-tune artist that knows how to push the Mega Drive's YM2612 chip to the limit.

The game is currently at the prototype stage and we will be releasing the finished product in October 2018 to coincide with the 30th anniversary of the Mega Drive's launch in Japan. The game is being coded in both C and ASM using Stephane Dallongeville's SGDK (https://github.com/Stephane-D/SGDK), with prototyping of gameplay elements being quickly trialled in our own custom engine (built in HAXE) on the PC before being ported over to the Mega Drive version.



GAMEPLAY
The focus of Xeno Crisis' gameplay is the intense combat which pits you (and optionally another player) against thousands of alien enemies - players take control of a male or female marine capable of moving and shooting in 8 directions, and they can also perform an evasive roll to get out of tricky situations. If things get really desperate then a grenade can be deployed, destroy anything nearby, giving the player a brief moment of respite.

Players have several weapons at their disposal, but ammo is limited so players must constantly be on the move, grabbing new weapons and extra ammo as they go. When a room has been cleared of all hostiles the player(s) can choose which exit to take, with the aim being to rescue any of the colony's inhabitants who might still be alive, and then progress to the area's boss. There are 5 areas in total, each with their own enemies, hazards, secrets and gameplay nuances.

Every few enemies killed will result in a set of dog-tags being dropped - these can be collected and exchanged for upgrades between areas.

Should the player run out of health they will be taken to the 'Continue' screen, where they can decide to continue the fight or start over - the player begins the game with 3 continues but more can be acquired between areas. If a player runs out of health in 2-player mode, that player will remain down until the end of the room, at which point they’ll be revived automatically.



FEATURES
  • Intense arena-based combat where the player must constantly be on their toes, prioritising which enemies to engage next, and ensuring they don't run out of ammo.
  • Procedurally generated maps and rooms, so you never know what's coming up, and you have to adapt your tactics on a room-by-room basis.
  • Optional 2-player co-operative play, so you can take the fight to the enemy with a friend - just make sure you share the ammo!
  • 5 diverse areas to explore, each with their own obstacles and hazards, and secrets, including The Outpost and The Nest.
  • Upgrade system which allows you to adapt the game to your style of play - are you a cautious player or more gung-ho?
  • An arsenal of 9 different weapons to switch things up and turn the tables in your favour.
  • 5 intimidating bosses, each of which will demand you to learn a different strategy to defeat them.
  • Two modes of play; once you've completed the Arcade mode you can try your hand at the Infinite mode, where even veteran players will find a challenge.
  • Two difficulty levels; "Rookie" and "Hardcorps". Playing on Rookie will mean easier progress, but you won't be able to see the "good" ending!

CONTROLS
We were determined to nail the gameplay and controls early on, and the Mega Drive's 3 button pad just doesn't work well for twin-stick shooters, so we needed to come up with an alternative. The 'lock' method in Granada (and Smash TV for that matter) worked really nicely though, and it also turned out that Shock Troopers used this method, so that gave us a lot more confidence that we were going down the right route. Smash TV was obviously designed as a twin-stick shooter, but we've designed Xeno Crisis to use the lock method from the outset and it works great. We also added the ability to alter your shot angle by 45 degrees by pushing 'A' or 'C' whilst firing - Skeleton Krew uses this system too, but you can comfortably play the game without using this system. There will of course be support for 6 buttons setup though, and even dual controller support similar to Smash TV on the NES.

Various screenshots, GIFs, spritesheets and artwork...























STATUS
Currently the project is at the prototype stage - we recently launched a Kickstarter campaign to raise awareness of the game and secure the funding to finish the remainder of the development, which we were fortunate to achieve in just 40 hours. The first area and its enemies are fully implemented, as are all of the weapons, and we are now adding the 2-player co-op mode which was our first stretch goal.

Henk is working on another tileset and Catherine is working on the intro, both of which are looking great. Working to the Mega Drive's restrictions is a challenge, but a fun one, and we're confident that we can deliver a quality product! If you have any questions at all then please ask, and feel free to head over to our Kickstarter where you can find more info on the project:

https://www.kickstarter.com/projects/1676714319/xeno-crisis-a-new-game-for-the-sega-genesis-mega-d

LINKS
Website: http://bitmapbureau.com
Twitter: https://twitter.com/BitmapBureau
Facebook: https://www.facebook.com/BitmapBureau/
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Superb Joe
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« Reply #1 on: December 20, 2017, 02:55:45 AM »

shock troopers fuckin owns. this looks cool. good luck
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BitmapBureau
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« Reply #2 on: December 20, 2017, 03:15:19 AM »

shock troopers fuckin owns. this looks cool. good luck

Cheers, yeah Shock Troopers was great - shame the sequel didn't live up to the original!
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« Reply #3 on: December 20, 2017, 03:31:07 AM »

oh sick you've got gecko yamori composing? this all looks great. it's really weird to see this here and not sega-16

just out of curiosity since you're doing procedural generation, have you sat down and had a good long look at how toejam and earl and fatal labyrinth handled it?
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BitmapBureau
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« Reply #4 on: December 20, 2017, 12:57:26 PM »

oh sick you've got gecko yamori composing? this all looks great. it's really weird to see this here and not sega-16

just out of curiosity since you're doing procedural generation, have you sat down and had a good long look at how toejam and earl and fatal labyrinth handled it?

Yes that's right - Savaged Regime can do things with the YM2612 that I didn't think were possible! We do have a Xeno Crisis thread over at Sega 16 but we figured that TIGSource would be a great place to start a dev log.

Regarding procedural generation, I know that Starflight and ToeJam & Earl use it (both from designer Greg Johnson), as does Fatal Labyrinth as you mentioned. I think we've already got the procedural side of things sorted though, and I'm not sure we'd be able to reverse engineer their code anyway. Smiley You've got me wanting to play some Fatal Labyrinth now though...
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« Reply #5 on: December 21, 2017, 03:38:02 AM »

i am, at heart, a master system man and so the official procedurally generated game of Europe, land of my birth, is dragon crystal. best of luck to you and your wonderful team.
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BitmapBureau
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« Reply #6 on: December 21, 2017, 05:49:21 AM »

i am, at heart, a master system man and so the official procedurally generated game of Europe, land of my birth, is dragon crystal. best of luck to you and your wonderful team.

Thanks for your kind words. Smiley I missed out on a lot of Master System stuff sadly, as I had a PC at that time (I think my parents are still paying it off...), but Dragon Crystal looks great and I can see how it paved the way for Fatal Labyrinth - I'll be sure to give it a go. I think my first experience of procedural /random generation was Rogue, and then games such as Elite and Starflight:







Hoping to get my daughter to try Rogue one day but for now she's quite into Sim City on the SNES. Smiley
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« Reply #7 on: December 21, 2017, 07:57:21 AM »

Congrats on the successful Kickstarter! Game looks great.
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« Reply #8 on: December 21, 2017, 09:28:31 AM »

This game looks badass, reminds me of Smash TV meets Chaos Engine in terms of colour range and tones.
Just within the first look, I already knew what it was inspired by. Am a big fan of those games myself.
Good work, look forward to playing it in the future.
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BitmapBureau
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« Reply #9 on: December 21, 2017, 09:41:49 AM »

Congrats on the successful Kickstarter! Game looks great.

Thanks! We really weren't expecting it to do as well as it's done, but it means we can now add some more features and look at potentially releasing it on other platforms.
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« Reply #10 on: December 21, 2017, 09:43:32 AM »

This game looks badass, reminds me of Smash TV meets Chaos Engine in terms of colour range and tones.
Good work, look forward to playing it in the future.

Cheers, yep, both Smash TV and Chaos Engine were big influences. Smiley
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« Reply #11 on: December 21, 2017, 07:19:23 PM »

Really excited that you guys secured the funding to make this co-op.  Love playing these types of games with a buddy of mine.  This all looks really badass, by the way!
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« Reply #12 on: December 22, 2017, 02:39:30 AM »

Really excited that you guys secured the funding to make this co-op.  Love playing these types of games with a buddy of mine.  This all looks really badass, by the way!

Cheers, just implementing the co-op mode right now in fact! Smiley
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« Reply #13 on: December 22, 2017, 04:34:18 PM »

this is so sexy
 Kiss Kiss Kiss Kiss Kiss Kiss
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« Reply #14 on: January 04, 2018, 01:55:28 PM »

Finally got round to making a couple more very rough GIFs this week, both featuring the new female marine in some 2-player co-op action:





I'm not yet sure how much (if any) tweaking will need to be made to the difficulty - the number of pickups is currently the same as in the single player game, meaning you have to share ammo, health, weapons etc. We'll be doing extensive play-testing over the coming weeks though.

We also recently added a new add-on to our Kickstarter campaign, which is a vinyl edition of the soundtrack:


The Kickstarter itself has just 5 days left to run now, after which I can get back to concentrating on design and code once more, which will be a relief. Wink

https://www.kickstarter.com/projects/1676714319/xeno-crisis-a-new-game-for-the-sega-genesis-mega-d
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« Reply #15 on: January 04, 2018, 02:50:00 PM »

Will you be offering pay pal?
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BitmapBureau
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« Reply #16 on: January 04, 2018, 03:00:39 PM »

Will you be offering pay pal?

I don't believe Kickstarter accepts PayPal, but you'll be able to order through PayPal at the end of the campaign.
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« Reply #17 on: January 04, 2018, 07:03:53 PM »

don't know how i missed this, but you've captured the Genesis era look wonderfully. in motion everything pops and the gameplay seems to accentuate those aspects. killer work
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« Reply #18 on: January 04, 2018, 10:13:04 PM »

I don't believe Kickstarter accepts PayPal, but you'll be able to order through PayPal at the end of the campaign.

yes, I know, but a lot of campaigns open up pay pal during their 3-4th week. anyway just want to help, I don't mind waiting
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« Reply #19 on: January 07, 2018, 08:39:48 AM »

With our Kickstarter campaign coming to an end in just a few days we've decided to announce our fifth and final stretch goal, which is to bring Xeno Crisis to the Nintendo Switch and Steam!



Thanks for all of the interest so far! Grin
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