Hi Mikey,
a gateway can be a router. But it can simply be a network interface as in this case. The gateway for the network 10.0.0.0/24 has the IP address 10.0.0.201 which is the address of an interface (physical or virtual) directly located at this machine, right? So packets for this network are sent to the gateway 10.0.0.201 which is not a distant router but instead the entry point to this net from this local machine! And this gateway in turn has to decide what to do with these packets, for example just release them to a ethernet segment, maybe do some address rewriting before or send the packets via a VPN to a remote gateway etc.
As a side note: because the machine is directly connected to the 10.0.0.0/24 network there is no need to use the default gateway 10.0.0.221. The machine can directly access this network and therefore it doesn't use the default gateway!
I hope this helped to explain what you see in your routing table
Marco