@pmacjg They have the deluxe version on steam for like $10, which is the same price as its sequel, though I agree in that they should have a free demo for the game which is just this version instead.
Wish I had known about this game half a decade ago, when I would have had the time to obsess over how cool this was in comparison to the prior games. Now I see this as more of a reminiscent improvement over a childhood favourite flash game. Oh well. This demo gives me the impression that the full game is worth paying for.
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