Numbsters is the newest crowd-funding campaign in the wallet game series, and is interesting to me immediately because it’s a solo game designed to be playable in-hand with no table, which means you really can play it anywhere. I backed Palm Laboratory for this reason a while back – I have a few games that I know I can play with very small amounts of table space (I consider these my “train games” as in “I can play them whilst on a train”); but that usually entails at least a little creativity with holding cards – I don’t currently have anything that is designed to be playable without a table.
The gameplay seems somewhat like a simplified version of Food Chain Island, which makes it less interesting on the one hand, but with that really minimal space advantage on the other, which definitely has an appeal for me.