There are very few 16-bit apps that folks find of interest these days. The original poster appeared to be using it for an old game (ironically, it seems that some of the currently popular games emulate the user interfaces of those old games using modern programming models), but we run into this with businesses from time to time that have a very old app that they depend upon and will never be updated.
I remember a business that rented out RVs that had 5 employees and this one 16-bit based DOS app that managed the inventory. They all shared the one office PC they had until the hardware died. They found a hosting provider to host it for them on RDS and we got it working on the 64-bit OS so that each employee could remotely log in from these new fangled laptops they bought, share the data, and never need to change the app.
We can keep these apps running, although honestly the business probably need to look to replace.