It's taken rather longer than it should have done, but I've added more levels to bring the total over 50 and brought the game out of Early Access to full release.
As a fun extra bonus, I've also added in VR support (for the HTC Vive only at the moment) in case being able to wander round the levels in 3D helps you come up with solutions.
You can also scale the world up and down with the - and = keyboard keys if you want - nothing quite like a full-size set of barrels rushing towards you during testing to get the heart pumping, really.
There may be future releases with additional levels, but I am going to move the majority of my game development efforts onto a new project. The main time sink is designing them; if you have a good set of level ideas and want them in the game send them over; unfortunately the level pipeline is designed in a way where I can't build an editor for it, but it's only a few clicks in the Unity editor if I have a design plan!
Slam was always my attempt to design a small game that it was actually possible to take from idea, through the easy half-complete stage, to a final, polished release. I hope you enjoy the result - it's hardly groundbreaking, but it's pretty polished, seems stable, and somehow has touch, VR, controller, and keyboard support all in one project, which is something I'll probably never do again!
