How to Make an Atomic Bomb in Your Garden asks a simple question. What if a bored gardener tried to become a backyard physicist with zero qualifications. This 2026 adventure casual indie simulation game from karahan is a comedy of errors. You search for parts in your shed, your kitchen, and the local junkyard. You read an online manual written by someone who clearly does not know what they are doing. Then you build something that sparks, smokes, or spins. Sometimes it works a little. Mostly it does not. The latest version of the game adds a multiplayer mode where two players compete to build the most impressive disaster and then blame each other.