Locking in my game ideas

Cosmologicon on 2013/04/12 22:42 of Universe Factory 16

I now have a rough core mechanic in mind for each of the five theme candidates. I'm posting a vague description of each so that, when the theme is announced, I can't use a different theme's idea after a slight modification. I hate that.

In all cases, I want a massively multiplayer open world with cooperative gameplay. For instance, once one player unlocks an area, all players can access it. But beyond that, the ideas are fairly different:

• Bat cave: construction Metroidvania
• Secret identity: top-down or isometric dungeon crawler
• Nemesis: tile puzzle + strategy
• Kryptonite: space exploration
• Sidekick: pinball