wtf is umbra?

UMBRA is a free, open source browser game where the entire point is defeating a series of bosses using only a single button. Made by a creator called Silent gho3t, the game can be played directly online through itch.io, or downloaded and run from this source code. The control scheme is deliberately minimal. Clicking switches which direction the player is facing, holding the button charges up an attack, and releasing it either fires a projectile or throws the player character at the enemy. Every fight in the game is built around that one simple input, which is meant to keep the action fast and easy to pick up while still requiring timing and judgment to beat each boss. As it stands, the game includes five bosses to fight through, and the readme specifically calls out the fifth boss, nicknamed Chad, as the most fun and best designed fight so far. The creator is upfront that the main way to make the game better going forward is by adding more bosses, and admits that coming up with fresh ideas for new fights is the hardest part of continuing the project. Anyone who plays is invited to share notes on how to improve existing bosses, propose new boss mechanics, or suggest ways to add more story, and contributions of any kind are welcomed. Running it locally is straightforward: clone the repository, start the included server with a single Node.js command if the project uses one, and then open the game in a web browser. There is no mention of any additional setup, accounts, or paid components. This is a small, community driven passion project rather than a commercial release, and it is aimed at players who enjoy short, skill based boss fights, as well as anyone interested in contributing new boss designs or ideas to a simple JavaScript game.