THE STORE
Not open yet. When it is, here is the rule it will keep: nothing purchasable changes the outcome of a game.
Things it will sell
Tile skins, fuse colours, liveries, confetti, a nameplate on the board, and a pass that unlocks replays and your full history.
Things it will never sell
Flags, extra lamp, safe-square reveals, revives, retries, cart insurance. Anything carried into a game. The cart being losable is the game.
Why say so now
Because the first time a store appears in a competitive game, everyone's first question is whether it sells advantage. Better answered before it opens than after.