Sig.NULL

Russia/CIS, Indie, Casual, Steam Achievements, Steam Trading Cards, Steam Cloud, Single-player, Steam Leaderboards, Full controller support, Tradable

Steam Gift

Gift

Link to the game in Steam

This is a restricted gift which can only be redeemed in these countries: Armenia, Azerbaijan, Belarus, Georgia, Kyrgyzstan, Kazakhstan, Moldova, Republic of, Tajikistan, Turkmenistan, Uzbekistan, Ukraine, Russian Federation

This is a remake and expansion of an earlier PuzzleScript game, Signal. What I thought was so brilliant about the original is that while the rules never change, the level design is such that your ability to fully comprehend and exploit those rules shifts radically over time