How about a battlefield map where you can snowball fight you friends? Make it a basic strategy game where you can duck, form snowballs, throw high (hits standing players), or throw low (hits those ducking). This can be against CPU (for minimal coins) or against other players (who place bets for winning).
 "No Time To Explain"){kind=icon}
 "Pingy the Ping Idle RPG"){kind=icon}