By default, the flare engine starts in a sort of fail-safe mode when
no game is provided on the command line, but no in-game interface
allows to switch to the real games. 

So, we forbid the use of that default game and advise the player about
the right command line to start the game.
---
 src/main.cpp |    5 +++++
 1 file changed, 5 insertions(+)

Index: b/src/main.cpp
===================================================================
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -232,6 +232,11 @@ int main(int argc, char *argv[]) {
 	srand((unsigned int)time(NULL));
 
 	init();
+	if (GAME_FOLDER.compare("default") == 0) {
+		fprintf(stderr, "\nflare: You must specify a game to play on the command line. Example:\n");
+		fprintf(stderr, "  flare --game=flare-game\n");
+		exit(1);
+	}
 	mainLoop(debug_event);
 	cleanup();