Number Reels

About this Slot

Number Reels is a money, classic and sci-fi themed slot by Cobalt Hollow with an RTP of 96.52%, high volatility and a maximum win of 9,999x. The game uses a reel modifier system centred on an operator reel that switches between addition and digit concatenation modes. Re-spins, mystery symbols and multipliers form the core mechanic set, with every spin resolving as a self-contained round rather than triggering free spins or separate bonus games. Guaranteed End costs 50x play and guarantees that the last digit lands between 1 and 9, never 0. This feature is most effective in multiplication rounds, where the final reel always contributes to the combined number and prevents the result from ending at zero. Last Two Guaranteed costs 150x play and forces the final two digit reels to land between 1 and 9. In multiplication rounds, this removes the risk of zeros on the final reels, helping to preserve stronger combined numbers within a single spin. Clone Mode costs 400x play and makes all four digit reels land on the same value. When using multiplication, one digit repeats across the result; when using addition, the total becomes four times that digit. Max Win Mode costs 1000x play and locks the round to three possible outcomes: 9,999x, 4,444x or 0x. The addition operator is guaranteed in this mode, so standard number play does not occur.