Colossal Gems Demo Slot — Play Free for Fun
Free demo · no real money · no deposit
For entertainment only. Wins are virtual credits and cannot be cashed out.
Colossal Gems is a low-volatility, space-themed gem slot from Habanero, released in 2019 and capped at a 461x maximum multiplier. The 6x5 grid pays along 30 paylines. Every win earns a re-spin, and each re-spin in the chain brings a bigger guaranteed block symbol, from 2x2 up to 4x4.
Game mechanics
Any win on the 30 paylines of the 6x5 grid triggers a re-spin, and the re-spins each guarantee a larger symbol block: a 2x2 on the first, a 3x3 on the second and a 4x4 on the third.
Win on three re-spins in a row and the game awards 6 free games, with at least one Colossal Gem guaranteed on every one of them. Multipliers can apply during the feature.
Features
- Colossal symbols. Block symbols take up several positions of the 6x5 grid at once.
- Win re-spins. Any win earns a re-spin, and the first three re-spins in a run guarantee a 2x2, a 3x3 and then a 4x4 symbol.
- Free games. Three re-spin wins in a row lead to 6 free games with at least one Colossal Gem on each spin and multipliers able to apply.
Why Colossal Gems has five RTP settings
Habanero's website lists five RTP settings for Colossal Gems: about 86%, 92%, 94%, 97% and 98%. Each version keeps the name and artwork, with the maths tuned to a different long-run return. The casino picks which one it runs, within any minimum its regulator sets. Studios say they offer several because markets differ: minimums vary between regulators, and casinos weigh taxes, margins and commercial terms. A higher setting does not guarantee a profit, and a short session can finish up or down either way. This demo uses virtual credits: nothing is deposited, withdrawn or paid out, so the setting has no financial effect.
RTP settings checked against Habanero’s page for Colossal Gems on 6 October 2026. What slot RTP means →
How to play the free demo
- After any win in the Colossal Gems demo, let the re-spin play out and look for the guaranteed block: 2x2 first, then 3x3, then 4x4.
- Keep count of consecutive re-spin wins, because the third one in a row brings 6 free games.
- In the free games, look for the Colossal Gem that is guaranteed on every spin.
Why try the Colossal Gems demo
The re-spin chain is the thing to watch in this demo: you can see how far a run of wins carries the block sizes from 2x2 towards 4x4, and how often it reaches the third straight win that opens the free games. Each free game then shows at least one Colossal Gem, so the bonus is a good moment to see how the big blocks sit across the 30 paylines.
FAQ
- Can I play Colossal Gems for free?
- Yes, spins on this page use virtual credits.
- What is the RTP of Colossal Gems?
- Habanero publishes about 86%, 92%, 94%, 97% and 98% as the RTP settings for Colossal Gems, five in all. Casinos decide which of these to run, and with the demo on this page the choice makes no financial difference.
- How does Colossal Gems pay?
- Wins are paid on 30 paylines across a 6x5 grid, and each one is followed by a re-spin with a guaranteed block symbol.
- What is the maximum win in Colossal Gems?
- The maximum multiplier Habanero publishes for Colossal Gems is 461x.
