1次元に制限されたフィールド。キャラクタは左右（もしくは上下）のみに動ける。 限られたフィールド上でゲームが成り立つよう、ゲームルールを適切に簡素化する必要がある。
field: 1D on got item: power up obstacle: chase on pressed: turn
on holding: charge field: 1D obstacle: penalty
on holding: avoid player: reflect field: 1D obstacle: well up
weapon: wipe on holding: shoot obstacle: penalty rule: classify field: 1D field: outpost
rule: match on holding: rotate field: 1D
weapon: change field field: holes weapon: artillery on holding: adjust angle on released: throw field: 1D
on pressed: jump into another field: holes field: 1D
weapon: disablement field: 1D rule: chain on pressed: shoot
