The decision to put the arcade mode in the game was a last minute decision!
As far as Sundae Month balancing these game releases...here's just the press release we wrote for explaining Sundae Month and the game cycling/month games to journalists and friends.
Sundae Month is a student collective of game developers. We met least year and liked each others' game development work. We all have very different development styles and in turn made very different games. Matt Rohr (Levity) enjoys making artistic puzzle games, Ryan Huggins (Boatventure) enjoys making action arcade games and James Shasha (Not On My Planet!) likes all sorts of innovative, progressive games and agendas. We felt that our varying styles and preferences would yield interesting collaborations, so we started Sundae Month.
We split into teams and started working on three main big projects. Levity(
http://www.levitygame.com/), Boatventure(
http://siifour.blogspot.com/ and
http://boatventure.sundaemonth.com/blog/) and NOMP! (which has no dev log yet).
We still found ourselves wanting to do smaller games while working on the bigger projects though, so we came up with the Sundae Project - "One game every month for the rest of forever!” We each take turns taking one month out of our larger project’s development cycle to work on a smaller project.
We hope to release a lot of different types of games that span a wide range of genres. The Sundae Project is kinda of like a long form game jam. The day the last game is released the next one goes into development. We have already started working on next Month’s game.