Published RTP of 96.00%, right on the industry benchmark. Certified by Booongo. With Bonus Buy active, the RTP rises marginally to 96.42%. As with all slots, this is a long-run average — short sessions will deviate significantly in either direction.

Treasures of Osiris is capped at 20,000x your bet. That is £5,000 at the minimum £0.25 stake, or £2,000,000 at the maximum £100 stake (theoretical, most operators cap payouts at £250,000). The cap is reachable only through a full-grid Grand jackpot with high-value money symbols filling the reels.

Landing 6 or more money symbols triggers the Hold & Spin bonus with 3 respins. Every new money symbol that lands resets the respin counter back to 3. The round ends when three consecutive respins fail to add a new symbol. Fill the whole 5×3 grid to win the Grand jackpot of 1,000x on top of the collected cash values.

Yes — Treasures of Osiris is built on HTML5 and works in both portrait and landscape modes at Mr Punter. The 5×3 grid is comfortable on any screen from 5 inches upwards. Total load is roughly 6 MB, so it plays smoothly on 4G. All controls are identical to the desktop version, including the Bonus Buy button.

Yes, from the Mr Punter lobby open the Treasures of Osiris tile and choose "Play for fun". The demo uses the same mathematical engine as the real version, including the Hold & Spin trigger frequency and jackpot chances — useful for learning the reset mechanic before spending real money.

High volatility (5/5) per Booongo's own rating. Base-game hit frequency is around 1 in 4.2 spins, but most base wins are small (0.5-2x bet). The Hold & Spin bonus triggers roughly once every 200-280 spins, so plan a bankroll of at least 300 base bets per session (about £75 at £0.25 spins) to reach the bonus reliably.

No reliable strategy — Treasures of Osiris is fully RNG-based. What you can control: bet size (start at £0.25 minimum, cap at £5 whilst the welcome bonus is active), autoplay (limit to 100 spins with loss/win stops), and whether to use Bonus Buy at 100x. Buy is marginally +EV (RTP 96.42% vs 96.00% on natural triggers) but demands a bigger buffer — budget for at least 15-20 buys per session.

Yes — Treasures of Osiris contributes 100% to the welcome bonus rollover (200% up to £1,500 + 150 FS across 3 deposits, 35x on bonus, £5 max bet). Its high variance is a mixed blessing for clearing the bonus: a good Hold & Spin round can wipe out the rollover in minutes, but dry spells can burn the deposit fast. Bonus Buy is disabled during the rollover.

Playing Treasures of Osiris on a UK-licensed casino (UKGC) is fully legal. On Mr Punter — which operates under an Anjouan licence (ALSI-152406028-FI2) and is not UKGC-licensed — UK players can access, but without UKGC protections (GamStop coverage, statutory ADR). Check gamblingcommission.gov.uk for the register of UKGC operators.