Is Mrboom: bomberman clone free?

Yes. Mrboom: bomberman clone is released under Free to play and costs nothing to download or play.

How big is the Mrboom: bomberman clone download?

About small. The minimum system requirements are Modern web browser.

No account is required to download or play.

Default bindings for every input method Mrboom supports. These are the game's own defaults — anything you have remapped will differ.

Local multiplayer assigns one input device per player; exact keyboard sets are shown during player setup.

Default keyboard and mouse bindings.

Movement — Mouse & keyboard
Action	Default input
Move	`Arrow keys`

Combat — Mouse & keyboard
Action	Default input
Place bomb	`Space`

Interface — Mouse & keyboard
Action	Default input
Pause	`Enter`

Multiplayer — Mouse & keyboard
Action	Default input

Join / confirm player	`Action key`

Default gamepad layout, using the standard face-button names.

Movement — Controller
Action	Default input
Move / menu navigation	`D-pad`

Combat — Controller
Action	Default input
Place bomb / confirm	`A / Cross`

Interface — Controller
Action	Default input
Back	`B / Circle`

Multiplayer — Controller
Action	Default input
Pause / join	`Start / Options`

Verified against the game by PlayBound.