README.md: update according to current status

1 files changed, 8 insertions, 2 deletions

diff --git a/README.md b/README.md
index 0802e07..f0ce30b 100644
--- a/README.md
+++ b/README.md
@@ -17,8 +17,12 @@ the future:
 - Sony PlayStation 1, using a forked version of
 [PSXSDK](https://git.disroot.org/xavi92/psxsdk).
 - Microsoft Win9x, using a `i386-mingw32` cross-toolchain and SDL-1.2.
-- Modern Unix-like operating systems such as GNU/Linux or *BSD, using
-SDL-1.2 (if available). Possibly modern Microsoft Windows versions, too.
+A `i386-mingw32` cross-toolchain must be already available on the
+system.
+- POSIX-compliant operating systems such as GNU/Linux or *BSD, using
+SDL-1.2 (if available).
+- Possibly, modern Microsoft Windows versions, too (currently
+untested).
 
 ## Design goals
 
@@ -29,6 +33,8 @@ between platforms without modifications.
 - Use modern CMake features for a simplified build process and
 availability of the `compile_commands.json` database.
 - Implement any multiplayer capabilities provided by the platform.
+- Support a wide range of screen resolutions, even portrait resolutions
+typically used by mobile platforms.
 - And, above all, provide a fun game that can run even on low-end
 hardware.