We participate in various seasonal sales, but we can’t put the game on sale all the time. Right now we’re on sale at the Humble Store.
Free weekends is something we’ve discussed, but it’s risky for early access games, if there’s new features that have bugs - it could ruin the entire experience for people.
As mentioned by others, Valve doesn’t allow developers to do two/four packs anymore.
Unfortunately a timed demo would be really hard for our moderation team, people would abuse it to avoid bans, and there is no system in place for such a demo.
We’ve been tackling interest in the game by working on features that the community most wants. Arcade Phase 2, Casino Phase 2, Mutators, additional Game Worlds, and Condo IO are the big priorities right now. Along with polishing existing games such as Laser Tag to make it more enjoyable and unique, and resolving bugs and crashes.