There is no other games except plinko which is my only preferable game to play when the main purpose is just to collect wager. A game where there is a guarantee money back on every bet (at least 20%) because the lowest payout is 0.2x which cant be find in other games.
If you put it that way, you are absolutely right. With Plinko, even if you lose you don't lose the whole stake. You will get something back, even if that sum is only 20% or 50% of what you wagered. I guess I should give Plinko some more attention and consider it in situations where a casino requires extra wagering. I just haven't had much luck with it, with the balls tendency to drop in the middle pockets most of the time.