diff --git a/README.mkd b/README.mkd
--- a/README.mkd
+++ b/README.mkd
@@ -1,11 +1,9 @@
-
-
 # isometric-park-fna
 
 
 As the director of a small state park, your job is to balance conservation, leisure, and fiscal sustainability. Gameplay is still being added.
 
-This is inspired by Maxis' Sim series of games, particularly SimSafari, and Chris Sawyer's Tycoon games. Its premise more closely resembles SimPark, but I never played it except for a demo. (Alternatively, watch [1990's Sim Games. SO GOOD!](https://www.youtube.com/watch?v=APFnM6DqtiA))
+This is inspired by Maxis' [Sim series of games](https://en.wikipedia.org/wiki/List_of_Sim_video_games), particularly SimSafari, and Chris Sawyer's [Tycoon games](http://www.chrissawyergames.com/info.htm). Its premise more closely resembles [SimPark](https://en.wikipedia.org/wiki/SimPark), but I never played it except for a demo. (Alternatively, watch [1990's Sim Games. SO GOOD!](https://www.youtube.com/watch?v=APFnM6DqtiA))
 
 ## Controls ##
 
@@ -22,11 +20,21 @@
 options aren't sufficient.
 
 Currently, there are no options for adjusting the difficulty beyond the settings
-that appear on the initial selection.
+that appear on the initial selection when you begin a game.
+
+## System Requirements ##
+
+The requirements are pretty modest. It runs pretty well on a 2010 MacBook Pro. Here's my estimated minimum:
+
+* ~2 Ghz Core 2 Duo
+* 2 GB of memory
+* Nvidia GeForce 200 series
+
+If you have a more typical machine with, say, 8 GB of memory, an NVIDIA GeForce GTX, and an i5, you should have no trouble running the game.
 
 ## Relationship to past work ##
 
-This game is a total rewrite of the original version in C#. I honestly like the original language and library more (Clojure and Quil), but Quil was starting to struggle with the amount of drawing, and I was hitting the limit of my optimization abilities and available information online. (Another drawback: I'm also giving up the browser version, unless people get XNA in the browser working.)
+This game is a total rewrite of the [original version](https://actuallyalys.itch.io/isometric-park-working-title) in C#. I honestly like the original language and library more (Clojure and Quil), but Quil was starting to struggle with the amount of drawing, and I was hitting the limit of my optimization abilities and available information online. (Another drawback: I'm also giving up the browser version, unless people get FNA in the browser working.)
 
 
 ## Installing and Running ##
@@ -35,7 +43,6 @@
 * Windows and Linux users should be able to double-click the EXE and run it.
 * BSD users can try using [fbsd-fnaify](https://github.com/oshogbo/fbsd-fnaify), although I have yet to confirm it works with Isometric Park. (If you do try it, let me know!)
 
-
 ## Developing ##
 
 To run from the command line, `make run`.
@@ -52,8 +59,6 @@
 2. Removed the ImGui folder: `rm -r ImGui.NET/`
 3. Copied `cp -r /tmp/ImGui.NET/src/ImGui.NET .`
 
-
-
 ### File Structure ###
 
 <pre>
@@ -65,8 +70,8 @@
 │   ├── **bin**
 │   │   ├── **Debug** Debug version
 │   │   └── **Release** Release version
-│   ├── *Camera.cs* 
-│   ├── *CellMap.cs* 
+│   ├── *Camera.cs*
+│   ├── *CellMap.cs*
 │   ├── **Components** Components that store data on entities.
 │   ├── **Content**
 │   │   ├── **DejaVuSerif-BoldItalic.ttf**
@@ -89,11 +94,11 @@
 │   │   └── **typicons.ttf**
 │   ├── *DllMap.cs* (vendored)
 │   ├── *DrawVertDeclaration.cs*
-│   ├── **Engines** Engines 
+│   ├── **Engines** Engines
 │   ├── *FilledRectangle.cs* Class for drawing a filled rectangle.
 │   ├── *FNAGame.cs* Primary game class.
 │   ├── **fnalibs** Compiled native libraries.
-│   │   ├── **lib64** 
+│   │   ├── **lib64**
 │   │   ├── **osx**
 │   │   ├── **x64**
 │   │   └── **x86**
@@ -150,16 +155,14 @@
 
 Fonts: Droid Sans, [Iosevka,](https://typeof.net/Iosevka/) [Typicons by Stephen Hutchings](https://www.s-ings.com/typicons/)
 
-Sources for the procedural generation are documented in Sources.md. 
+Sources for the procedural generation are documented in Sources.md.
 
-Watching Thin Matrix's [video devlogs](https://www.youtube.com/watch?v=90CZ7Q17sls&list=PLRIWtICgwaX1gcSZ8qj8Q473tz7PsNmpR) for Equilinox inspired me to press on. :) Despite some similarities, the design of this game wasn't really inspired by Equilinox. (I've also enjoyed Thoughtquake's [video devlogs](https://www.youtube.com/user/Thoughtquake/videos) for Cargo Defense and Cliff Harris' Democracy 4 [video devlogs](https://www.youtube.com/user/cliffski2/videos))  
+Watching ThinMatrix's [video devlogs](https://www.youtube.com/watch?v=90CZ7Q17sls&list=PLRIWtICgwaX1gcSZ8qj8Q473tz7PsNmpR) for Equilinox and his subsequent games inspired me to press on. :) Despite some similarities, the design of this game wasn't really inspired by Equilinox. (I've also enjoyed Thoughtquake's [video devlogs](https://www.youtube.com/user/Thoughtquake/videos) and Cliff Harris' Democracy 4 [video devlogs](https://www.youtube.com/user/cliffski2/videos)).
 
 The original versions used art from the [Low Poly Forest Pack](https://devilsworkshop.itch.io/lowpoly-forest-pack) by [Devil's Work.Shop](https://devilsworkshop.itch.io/). (I had converted the models into isometric 2D images, using [this process.](https://www.youtube.com/watch?v=bk0PXMgZgQg))
 
 ## License ##
 
-© 2021 Alys S. Brooks
+© 2022 Alys S. Brooks
 
 I haven't decided on a license.
-
-