After dealing with the cooldown timer-packed abomination that was Rollercoaster Tycoon 4, I decided that it was time to address an issue that has been bothering me for a while.

We're starting to see more and more premium mobile games appearing with free-to-play-style timers and energy systems secreted in their menus. Despite charging a flat fee up front, hese games will still throw up artificial barriers - and even lock you out altogether - unless you buy in-app purchases.

The way I see it, this transparently unscrupulous practise - which I'm labelling "pay-to-pay" - is bang out of order. Here's why: