Arcane Gems is an online slot game developed by Quickspin, featuring 5 reels, 3 rows, and 9 ways to win. The game takes place in a mysterious jewelry box belonging to an old school explorer adventurer, complete with a Mediterranean sea chart and navigation equipment. The game is visually stunning, with 3D graphics that bring the gems to life.

Features:
- Arcane Lock Respins feature: This feature is triggered when a winning combo is landed, elevating the highest paying symbols and locking them in place while other lower-value winning combos are summed up and paid. Players get free respins for the remaining symbols that are not locked, and this goes on as long as identical symbols are landed.
- Arcane Multiplier feature: Every time a reel is filled with a locked symbol, a random multiplier between 2x and 5x is assigned above the reel. If more than one active win multiplier is landed, they are added together to boost the player's total win.
- Mobile and tablet play: The game is built with HTML5 technology, enabling seamless gameplay on mobile and tablet devices.
- Bet size: Players can place bets between 10p and £50 per spin across all platforms and handheld devices.

Mechanics:
- The game comes with medium volatility and boasts a max win potential of up to 5,625x the player's stake.
- Players can toggle on the fast play option (or quick spin ) to enjoy fast-paced gameplay.
- Autoplay feature is available, allowing players to set up between 10 and 1,000 autospins, with the option to choose a loss and win limit for the autospins to stop.
- The game interface is user-friendly and easy to navigate, with a gear icon to access game settings, a hamburger menu for the paytable and game rules, and a bet level option to choose the desired bet size.
- There is no free spins feature or bonus round in this game, as the focus is solely on the Arcane Lock Respins feature and the reel multipliers.

Overall, Arcane Gems is an engaging game with interesting bonus features that are sure to keep players entertained. However, the lack of a bonus round or free spins feature may make the gameplay experience somewhat repetitive after a while. But with its solid potential and medium volatility, this game is definitely worth a try for any slot enthusiast.