The Gama Bomb side had new tracks "Zombi Brew" (from the Citizen Brain demo) and "Frightmare On Hell St.", together with a cover of the punk band The Dangerfields' song, "Maniac".

[5] The band became vocal in its support of music downloading, and led a campaign to 'Stamp Out Inferior Metal', asking fans to bring along CDs they regret buying and to destroy them at shows.

In summer 2009, the band played mainstage bookings at the European metal festivals Hellfest[6] in France and Tuska Open Air[7] in Finland alongside Mötley Crüe, WASP, Anthrax and Suicidal Tendencies.

[8] Gama Bomb announced via their MySpace blog in August 2009 that they were returning to the studio to record their third album, Tales from the Grave in Space, for a November 2009 release.

[11] In 2010, Gama Bomb was nominated in the Best Underground Band category of the Metal Hammer Golden Gods Awards but lost to Immortal.

[12] In March 2012, the band revealed via Facebook that vocalist Byrne had undergone surgery for vocal fold nodules, sustained over the last year's touring, and was recovering from the procedure.

[13] In July 2012, the band celebrated its tenth anniversary with two shows in Belfast and Dublin, reuniting on stage with the former guitarists Canavan and Graham for greatest-hits sets.

[25] In March 2018 Gama Bomb returned to Scott Atkins's Grindstone studios in England to begin work on their sixth album, Speed Between the Lines.

Work would be undertaken on and off during the year [26] as the band planned to mark the 10th anniversary of their Citizen Brain album with a series of European dates in the summer.

[27] Speed Between the Lines was released in October 2018 and was preceded by the 7-inch single and video for "Bring out the Monster",[28] introducing the band's mascot, Snowy The Gamabombinable Snowman.

[30] In May 2020, Gama Bomb announced their signing to Prosthetic Records and released Living For The Lockdown, a standalone single in support of Irish homelessness charity Dublin Simon Community.

[31] The band would spend most of 2020 Self-producing their seventh album Sea Savage in isolation due to the COVID-19 pandemic, with Vader and Decapitated drummer James Stewart guesting.

The figure of Snowy was key to the concept of Sea Savage, which was presented as a Victorian stage play about the band voyaging in search of the yeti.

Stylistically rooted in 1980s thrash metal the band has stated that its influences include acts such as Nuclear Assault, Kreator, Agent Steel, Sodom, old Slayer and early Megadeth.

Gama Bomb's lyrics often refer to the horror, action and science fiction movies, cartoons and computer games of the 1980s, as well as paying tribute to many classic heavy metal themes.