Lots of great software & homebrew games, and the hardware options now are just amazing. There's FPGA, emulation, PiStorm accelerators, Vampire, re-amiga... and only this month, Hyperion released an updated OS3.2[3].
It was (and is) such a versatile, forward-thinking platform and I still very much enjoy seeing how far the community can take it.
[1]=https://www.markround.com/blog/2023/08/30/amiga-systems-prog...
For software, you have modern computer power to bring to bear on the problem. Assembly/compilation/precomputation/prototyping is far quicker, and the debugging possibilities with an emulator are way ahead of anything you'd ever have had at the time. For hardware items there are freely available design tools, many cost-effective options for small production run manufacture, and for stuff like the Amiga (where nothing happens at more than about 16 MHz) logic analyzers are cheap.
And the Internet makes discussing things a lot easier too!
1. Amiga 3000 (1990)
2. Amiga 3000T (1991) - Tower version of the 3000
3. Amiga 4000 (1992)
4. Amiga 1200 (1992) - Released shortly after the 4000
5. Amiga 4000T (1994) - Tower version of the 4000
6. Amiga 4000CR (1996) - Cost Reduced version
7. Amiga 4000TX - No idea and not heard of it beforeMe neither, but this seems to be a video about this build: