Chess with progression

Play games, get upgrades, unlock pieces. You start with your king and 2 pawns and gradually unlock pieces and upgrades. A pawn might get upgrades like en passant and two forward on first move, and maybe later legendary upgrades like chain capture. Face players your level and use your point budget (determined by level) to assemble your starting pieces (deck), e.g. 40 points (pawn is 1 point, knight is 3 points, etc)