Return to player. Play £10, Get 50 Free Spins (T&Cs Apply). Try Diamond Link Mighty Sevens slot online for free in demo mode with no download or no registration required. Play Diamond Link: Mighty Sevens and + of your favourite online slots at Double Bubble Bingo. Play Diamond Link Mighty Sevens slot completely for free, without spending any money. The slot game Diamond Link: Mighty Sevens offers lots of exciting game features, including the Diamond Link Feature with four jackpots up for grabs! Diamond. Diamond Link Mighty Sevens is a 5-reel, line online slot game with bonus round, bonus spins, instant play, autoplay, video slots, wild symbol. Land different diamonds in this game and you could unlock a range of bonuses and prizes, including Free Spins and some jackpots. When three Scatter symbols. . %. Demo play for fun, no download or registration required. This is a 5×3 slot with 25 fixed pay-lines, which makes it fairly straightforward to play overall. It also can pay up to x your stake – this is all. You can turn off the gamble game, set up autoplay, or tailor. Game Type. Diamond Link: Mighty Sevens slot is built around a top progressive jackpot that everyone has their eye on. A variety of bonus games and prizes are on offer in this game when you land different diamonds, with Free Spins and a number of jackpots available.