Donuts is a 2016 Big Time Gaming release that predates the Megaways era but carries the DNA that would make BTG famous — mechanical invention applied to a theme that earns its hook. The doughnut theme is not just decoration here; the hole in the doughnut is a literal gameplay mechanic. It is a surprisingly creative use of a simple concept.

There are no paylines and no Megaways — Donuts uses a wins-both-ways structure where matching sequences pay from both left to right and right to left simultaneously, effectively doubling the ways to win on a fixed grid. Bets range from €0.10 to €20 per spin. The visual design is colourful and appetising in a way that does not overstay its welcome.

The doughnut hole mechanic comes into play during the Free Spins round: doughnut hole symbols collapse through the grid, removing standard symbols and allowing replacements to drop in from above. This collapse creates the potential for extended win chains during the bonus, with the hole mechanic effectively functioning as a cascade system native to the doughnut concept. No Bonus Buy is available.

RTP is 96% with high volatility — elevated for a 2016 title, and reflective of the non-standard mechanics at work. Maximum win is 5,000x the stake, which is impressive context for a game from this period in slot design.

Donuts is worth playing as a piece of BTG history and as a genuinely solid slot in its own right. The both-ways pays combined with the hole collapse mechanic gives it a rhythm that holds up. A good call for players interested in what BTG was doing before Megaways changed everything.