[fbcpck]

Any games that have competitive, collaborative multiplayer aspect I think!

Especially Google Spreadsheets; perhaps not math/computation-heavy like EVE, but it's one of the best tools to organize data in a collaborative manner online.

An example: Inventory management/dashboard of a clan of 30 members: https://docs.google.com/spreadsheets/d/1tpbLmB4Fha_0TpMd4h3d...

I also see it (ab)used frequently as a mediawiki/online text-editor alternative, barely using any spreadsheet mathematical formulas, using it simply as a place to write text for others to read, e.g.: this gigantic reference spreadsheet: https://docs.google.com/spreadsheets/d/1JjK7Ws4gfzKChRs5ueox...

[slightwinder]

Any game can be competitive, it doesn't need multiplayer for it. Speed runs are a prime example of this. All you need is a goal, and people will compete who will reach the highest value. I mean we have even an Excel esports-League now, and there are twitch rivals for the cozy game Stardew Valley...