I don't think PC world sold Tiny pcs as Tiny were a competitor (just like Time, Mesh or Evesham). PC world were generally Packard Bell, Hewlett Packard & Compaq in that era.my first PC was a pre-built from PC World
It was made by Tiny but can't remember any of the specs. Didn't take long before I started swapping parts out before eventually building my own from scratch and then never looked back.
first game was Half Life
Personally first pc was a zx81 and game was probably manic miner.
First x86 was some 386sx and game was possibly tie fighter? Loong time ago!