I think something simple and inclusive that’s easy to understand for everyone! I’d say a copy of candy crush we can just call it crypto crush and instead of candies we just use the different logos tribe tokens that we have on steem engine and users can win various tokens for their favourite tribe and Steem

You could run some ads to cover costs and bring some value into Steem or allow people redeem the tokens for upgrades and stuff! You know this gamification goes