Multiplay has upped some of the prize pools at Insomnia58 which takes place next week.
The Overwatch prize pool has been raised from £5,000 to £7,500, while Team Fortress 2 has increased from £5,000 to £8,500.
It looks like the increase is thanks to a few more sponsors signing up, including Astro for Overwatch and OCZ and ScrapTF for TF2.
Multiplay also rose the prize pools for other games recently, including League of Legends, which has gone from £5,000 to £8,000.
The initial tournament and prize pool announcement was made back in April.
i58 takes place at the Birmingham NEC from August 26th to 29th and eSports News UK will be reporting live from the event over the weekend.