Looks interesting but if I start the game in WebGL I can only see the title and nothing happens even after like 20 sec or pressing any keys

Hi there! Do you mean the text "Red Horizon" on a black screen? That's the loading screen and it should go away after a few seconds. You could try reloading the page, or just leaving the page open for longer. It shouldn't be a hardware issue as I have been able to run my game on several devices including my phone. Please try again and if it still happens, even after waiting for a bit longer, let me know and I will be open to resolving the issue. Also, what OS are you running  it on? Thanks!