Fourthing CCL - it's stable on Windows and fast enough for writing games :).
Also, it's the best free CL for targeting Raspberry Pi - unlike SBCL, CCL supports native threads there, and with the weak but quad-core processor of RPi2, the difference is very noticeable.
Also, it's the best free CL for targeting Raspberry Pi - unlike SBCL, CCL supports native threads there, and with the weak but quad-core processor of RPi2, the difference is very noticeable.