This is an evaluation version that you can use for 30 days.
After that time, you must register to get a license key to continue using the software. It's free.
Version: 2.0.1638
System Requirements:
Windows 98, NT, ME, XP, 2000, or Server 2003.
32MB RAM
1.2 MB hard disk space for MIPSter
.NET Framework 1.1
30 MB hard disk space for .NET Framework 1.1
Microsoft's .NET Framework 1.1 is included in the 22.6 MB setup package.
If you already have .NET Framework 1.1, you can download the 0.9 MB Setup package instead.