Too late but I finally managed to make an HTML5 version with Unreal

Unreal is not the best engine to publish game on the web. Moreover 3D can look bad because the rendering is quite limited. But I really enjoy when people try my games so I had to find a way to publish my game on the web without losing to much on the graphics quality. I found a way to have decent graphics by baking light on the textures with substance. It was a bit tedious because I had to do that for every model but the result is ok for the web. Even if it's too late for this game jam, I think for the next game jam I will start with this technique to publish my game directly on the web.
This is a small timed puzzle game you can finish in 2-3 minutes. Find the correct pump to reanimate the robot by seeing which wire connects to the robot, then activate it. Pump the wrong pump and the robot explodes.
For people who already tried my game at the beginning of the jam, I tried to find a way to make it more interesting so I added more levels, some narration between the levels and improved the overall experience by adding more feedbacks and improving the graphics. Each piece of narration depends on what you did during the level so it reacts a bit on how the player plays.
I hope you'll have some fun if you try it. Thanks to all people who played the game.

Link to play it : https://julienlussiez.itch.io/pumpit Link to the LD page : https://ldjam.com/events/ludum-dare/46/pump-it-1