SickBrick is an action-oriented Sci-Fi FPS with modern graphics and oldschool gameplay inspired by Portal and Serious Sam. Out now for Windows, Linux and Mac! (linux version uses a wine wrapper) The game consists of 15 levels mixing indoor and outdoor areas. You're forced to do tests for an unknown robotic mastermind. As you go through the tests, you slowly unravel the story through log files of previous test subjects. Kill hundreds of robots, use unique weapons, drive a tank!
This game is real good, it has the feeling of the game portal, if you know it, and having a non-AAA engine but with graphic quality like such, it makes the game a masterpiece, and by the way, it is not with the engine, it is with the gameplay that makes a game cool and great. It is with the developers not the software. Have a great day!