Editor — OpenTD

Game settings

Game type Monster March Monsters follow the painted path toward an exit.

Monster Rush No fixed path. Players maze with towers & walls. If blocked, monsters attack obstacles on the shortest route to the exit; when a free path opens they follow it and stop attacking.

Chaos mode Monsters keep destroying walls and towers along the shortest path to the exit even after a free lane exists.

Defend the Castle Monsters try to destroy a central tower (the castle) rather than only marching off the map.

Grid width Grid height Allow building on bare ground Off = towers only on tower pads Starting lives Starting gold

Waves 0

Round = game round number (1, 2, 3…). Appearance = the Nth time this wave type is used (e.g. Goblin wave on rounds 1, 3, 5 → those are appearances 1, 2, 3). Scaling can use appearance or round.

Spawns & exits 0

A complete game needs at least 1 Spawn and 1 Exit.

Required: paint at least one Spawn and one Exit from the bar above the grid. Multiple allowed — rename ids here. Shift+click a portal on the map to select it.

Spawns (need ≥1)

No spawns yet — paint a Spawn cell.

Exits (need ≥1)

No exits yet — paint an Exit cell.

Towers 0

Monsters 0

Click a color to paint; click the same type again to clear to ground. Path is primary in Monster March; walls shape mazes in Monster Rush.

On the scoreboard

Available widgets

Wave timers