The Tandy 1000 line was a great DOS machine of its moment for games, because the 1000 wasn't just a PC clone, it was a better version of the PCjr -- it had better sound and graphics out of the box compared to PCs, with better actual PC software compatibility and without the horrible chiclet keyboard. The 1000 was so successful for a while that games that supported the PCjr's enhancements were marketed as "Tandy-compatible".
Which Tandy DOS computer; there were several? While not bad machines, the 80186 ones suffer from all sorts of more or less annoying incompatibilities because of the differences between the peripheral layout and BIOS compatibility. A number of friends of mine got burned by that.