However, they are also among the best puzzle games the indie space has to offer. From old-school adventure games to platformers to first-person puzzlers, there are a lot of variants to choose from.

Steph, 30, from London, who chose not to publish her surname, said her weekly shop cost her £20 in 2015 - now it's an "extortionate" £50, despite cutting out meat and fish to save money.