Borderlands The Pre-Sequel $36 / £22.50, Steam redeemable

This one is tricky because it works only in the UK and some parts of Europe. The voucher code is: P65PW6-F9B91D-TW2AG2

The first 25% off on store page (for the regions mentioned above) takes off 25% of the original price, then the code takes off 25% of the reduced price. So basically it’s almost 44% off.