+# Variations on Rockdodger 0.5.7
+
+VoR is a quick action game where you drive a space ship and try to avoid
+crashing into rocks. Current information about vor can be found on the
+homepage: https://sametwice.com/vor
+
+Here are the keys:
+
+ Space: Start playing
+ 1: Switch to easy mode and start playing
+ 2: Switch to normal mode (default) and start playing
+ Arrows: Steer (use short taps, and remember to slow down)
+ Esc: Quit
+ F: Toggle full-screen mode
+ P: Pause/unpause
+ 3: Save a screenshot
+
+See INSTALL for instructions on building, running and installing.
+
+VoR is released under the GNU GPL -- see file COPYING for details. The audio is
+public domain.
+
+Jason Woofenden and Josh Grams like Rock Dodgers (a game by Paul Holt:
+http://spacerocks.sourceforge.net/) very much: both playing it and hacking on
+it. VoR is the result. It is currently based on the rockdodger 0.4.2 codebase,
+with quite a few modifications, both user-visible changes and internal
+technical improvements.
+
+Available for download from https://sametwice.com/vor
+
+Note: This is a fairly hard game, intended to be a quickie game for when you
+want to kill a few spare minutes. For reference, my best time [Josh Grams] is
+about 2 minutes in version 0.3. I'm not generally very good at video games, but
+I have been playing this one for quite a while now.
+
+
+## Changes from Rock Dodgers
+
+User-Visible Changes:
+
+0.5.6:
+ * Some rocks disappear when hit by your exploding ship sparks
+
+0.5.4:
+ * new sound effect and music
+ * F key toggles full-screen mode
+ * 3 key saves a screenshot
+
+0.5.3:
+ * another attempt at fixing the x86 crashes.
+ * made valgrind happy.
+
+0.5.2:
+ * another attempt at fixing the x86 crashes.
+
+0.5.1:
+ * another attempt at fixing the x86 crashes.
+
+0.5:
+ * lots of bug fixes
+ * tweaks to engine and explosion graphics and new font
+
+0.4:
+ * Rocks now bounce off each other, and are pushed by particles.
+ * Now with two difficulties: normal and easy.
+ * Better new ship placement after you die.
+
+0.3:
+ * Scrolls to the right so you can zoom ahead.
+ * Fully random rock generation; rocks no longer wrap vertically.
+ * Rocks' relative speeds are now uniform in all directions (i.e. much more
+ up/down speed variation). Noticeably hard...err...more "interesting".
+ * Command-line option --game-speed.
+
+0.2:
+ * New graphics, generated by POV-Ray. Yeah, okay, the ship is really cheesy.
+ At least the rocks are cool.
+ * Real collision detection; no more "ship is 1 pixel bigger all around
+ than it looks."
+
+0.1:
+ * Moves like a real spacecraft; no more friction!
+ * No more silly shields or lasers; just pure rockdodgin' fun!
+ * Up/down scrolling; gives you more escape options.
+ * Proper time display for score, not just raw milliseconds (bleh).
+ * Ship explodes, blowing rocks away, rather than automagically vanishing
+ them.
+
+Internal Technical Changes:
+
+ * Build system now uses autoconf (as of 0.5.5)
+ * Replaced SFont with Jason's font.c
+ * Started factoring a lot of stuff out of main into their own .c files.
+ * Removed a bunch of unused code.
+ * Function definitions: name at beginning of line (line following the return
+ type) for easy grepping as per GNU coding standards.
+ * Real collision detection (bbox/bitmask).