TNT Tumble Demo & review

The third game in Relax Gaming's Tumble series hides its bonus under a floor of dark stone. TNT Tumble pays lines of three or more matching gems across or down a 5x7 board, every win breaks the stone beside it, and destroying every block on one spin opens free spins in a mode you choose. It came out in April 2020, and it is built for anyone who enjoys watching a bonus get closer.

The board before our first spin, still at the demo's opening $2 bet: gems on top, three rows of dark stone below. FluxPlays demo test, 1 November 2026.

How TNT Tumble works

Any straight line of three or more matching symbols wins, horizontal or vertical, as long as they sit next to each other. The board is five columns wide and seven rows deep, so a line of six or seven can only run downward.

The top symbol only pulls away at seven, a full column. After every win the winning symbols and the stone blocks touching them are destroyed, everything above falls, and new symbols drop in until nothing more pays.

The stone floor: TNT, drill wilds and the trigger

Every round starts with dark stone blocks across the three lowest rows, and up to three of them can be TNT. Breaking a TNT block destroys every other dark block on its row in one go, which is the fastest way through the floor.

Wilds arrive as stacked drill segments. A win does not destroy them until they reach the bottom row, so a drill keeps working its way down while the tumbles run.

The intro screen for the drill wilds, which survive wins until they reach the bottom row. FluxPlays demo test, 1 November 2026.

Destroy every dark block in the base game and the free spins start. The floor is rebuilt for each new spin, so the whole job has to be done inside one tumble sequence. That is what decides the game: most spins break a few blocks, and the bonus needs one chain long enough, or one TNT well placed, to finish the lot.

Free spins: which mode to pick

The round opens with a choice of three modes, and the pick screen gives each its own volatility label. In free spins some dark blocks are special, and the mode decides what they hold. In every mode, clearing every third full row of blocks adds two spins, and Relax Gaming's game page adds that TNT blocks are kept for each spin.

The pick after our natural trigger on spin 15, where we chose the middle mode. FluxPlays demo test, 1 November 2026.

For us the middle mode is the one to take. Extra spins give an added multiplier more spins to work on, while pure Multiplier asks a short round to do everything.

You can also buy the round for 70x the bet from the base game, at the same RTP as spinning, and you still choose the mode afterwards.

Free spin 4 of 6 in our bought Multiplier round, with the multiplier at x3 and a crystal block still in the stone. FluxPlays demo test, 1 November 2026.

RTP, volatility and max win

The game returns 96.11% in theory, the same when you buy. Relax Gaming also lists a 90.00% version for Germany, so the operator's choice of build matters.

The rules carry no volatility label for the game as a whole, only the three on the pick screen. Review sites rate it Medium overall and quote max wins that disagree with each other.

Neither the rules nor Relax Gaming's game page states a maximum win, so the table leaves it out. The launch announcement spoke of wins over 12,000x the stake, but that is not a cap the game describes.

Our TNT Tumble demo test

The stone floor turned out to be a good gauge of how close the bonus was. Spin 15 broke all of it, and the spin and its free spins paid $152.90 together, and spin 41 got within one block of a second trigger while paying $24.20 on the way.

Spin 41 settled with a single dark block left standing, one short of the free spins, for $24.20. FluxPlays demo test, 1 November 2026.

Between those two, small wins came steadily: 40 of the base spins paid, almost all of them a few dollars or less. The natural round, in Multiplier & Extra Spins, ran to 14 spins, and by its ninth the multiplier stood at x7. The bought Multiplier round lasted six spins and finished far below its price. We did not try Extra Spins. One natural round and one bought one cannot measure what the modes return, only how differently they play.

The natural free spins from spin 15 settled at $152.90, trigger cascade included. FluxPlays demo test, 1 November 2026.

Is TNT Tumble worth playing?

For a bonus chaser, yes, and for a buyer too. For a max-win hunter, no. The floor turns the wait for free spins into something you can watch: each spin shows how many blocks it broke, and a TNT on the right row can do most of the work at once. The mode pick then lets you set the round's swing yourself.

Pick Temple Tumble Megaways if you want the same clear-the-blocks trigger on Megaways reels and do not need a buy. Choose TNT Tumble for straight lines in any direction, TNT that wipes a whole row, and a buy that still lets you pick.

In the demo, watch where the TNT blocks sit at the start of each spin. A win next to one clears its whole row, the quickest way through the floor.