So you can suggest literally anything, ranging from moving pawns/pieces, to changing piece colour, to replacing and adding new things (from other games, or even not from games (let alone board games), to adding new boards/games! Have fun! Do wantever you what!

pe2 to e4

Qxa8 hehehe

E4

e4-e6

pawn 5 from e2 go to e4 thats only my guess and that is book move