I don't think this is for gaming. It has arrows plus two buttons, probably for conceptual equivalents to "tap/click/enter" and "back/escape".
If you want a DIYish handheld for gaming there are much better options on the market.
Not to be rude but the page literally says "Browse what the community ships: games, tools and toys. Run them on your Kode Dot."
Not to be rude but the page literally says "Browse what the community ships: games, tools and toys. Run them on your Kode Dot."