On: FPGA dev board that's cheap, simple and supported by OSS toolchain

[mrlonglong]

Could this board be useful for playing with RISCV?

[mhh__ → mrlonglong]

Should have enough LUTs to play with, although not much to spare if you built a core for work rather than play

[funkaster → mrlonglong]

yes. Even one of the examples is a RISC-V core. However, your expectation should be around a RISC core that can be used as a microcontroller rather than a RISC CPU for running linux.