Update install instructions (#5)

Updates to the main page and installation instructions.

index.md

@@ -5,10 +5,10 @@ title: Home
 Home
 ====
 
-Swarm is a 2D programming and resource gathering game. Program your
-robots to explore the world and collect resources, which in turn
-allows you to build upgraded robots that can run more interesting and
-complex programs.  Check out the [installation
+Swarm is a terminal-based 2D programming and resource gathering
+game. Program your robots to explore the world and collect resources,
+which in turn allows you to build upgraded robots that can run more
+interesting and complex programs.  Check out the [installation
 instructions](/installing), join the [IRC
 channel](https://github.com/swarm-game/swarm/blob/main/COMMUNITY.md),
 take a look at the [wiki](https://github.com/swarm-game/swarm/wiki),
@@ -21,21 +21,19 @@ log.](/images/tutorial/log.png)
 Features include:
 
 * Practically infinite 2D procedurally generated worlds
-* Simple yet powerful programming language based on the polymorphic
-  lambda calculus + recursion, with a command monad for describing
-  first-class imperative actions
-* Editor support with LSP and highlighting
+* Simple yet powerful statically typed programming language based on
+  the polymorphic lambda calculus + recursion, with a command monad
+  for describing first-class imperative actions
+* Editor support with syntax and error highlighting via LSP
 * In-game tutorial
-* Multiple game modes:
-    - In Classic mode, you start with the ability to produce only very
-      basic, limited robots; collecting resources allows you to
-      bootstrap your way into programming more sophisticated robots
-      that can explore more of the world, collect more resources, etc.
-    - Creative mode places no restrictions: program robots to your
-      heart's content using whatever language features you want,
-      without worrying about collecting resources.
-    - There are also challenge scenarios where you attempt to program
-      robots in order to solve pre-designed puzzles or challenges.
+* A classic open-world mode, in which you start with the ability to
+  produce only very basic, limited robots; collecting resources allows
+  you to bootstrap your way into programming more sophisticated robots
+  that can explore more of the world, set up automated production
+  pipelines, and unlock additional language features.
+* A large collection of standalone scenarios, challenging you to use
+  your ingenuity and programming skill to complete specific tasks
+  using only the given resources or language features.
 
 Community
 =========
@@ -44,10 +42,10 @@ Check out the
 [COMMUNITY](https://github.com/swarm-game/swarm/blob/main/COMMUNITY.md)
 page for ways to connect with others in the community.
 
-If you want to contribute, you're most welcome!  There are *lots* of
-ways to contribute, regardless of your Haskell background.  For
-example, even someone with no Haskell experience whatsoever could
-still help with *e.g.* game design, playtesting, and creating
-challenges and scenarios.  Check out the
+If you want to contribute, you're most welcome!  There are many ways
+to contribute, regardless of your Haskell expertise.  For example,
+even someone with no Haskell experience whatsoever could still help
+with game design, playtesting, and creating challenges and
+scenarios.  Check out
 [CONTRIBUTING](https://github.com/swarm-game/swarm/blob/main/CONTRIBUTING.md)
-file for more specific information about how to contribute.
+for more specific information about ways to contribute.

installing.md

@@ -5,17 +5,12 @@ title: Installing
 Installing
 ==========
 
-**NOTE**: Swarm requires a POSIX-style terminal environment that
-supports `terminfo`.  Linux and MacOS should work out of the box.  On
-Windows, you will need to use [Windows Subsystem for
-Linux](https://learn.microsoft.com/en-us/windows/wsl/); you should
-then be able to follow instructions for installing on Linux.
-
-It is recommended that you use a relatively large terminal window
-(*e.g.* 170 columns x 40 rows or larger).  To find out the size of
-your terminal, you can type `stty size` at a command prompt. If it's
-not big enough, try decreasing the font size. You can read about
-and/or share recommended terminal settings in [this GitHub
+Swarm supports Linux, Mac OS, and Windows.  It is recommended that you
+use a relatively large terminal window, *e.g.* 170 columns x 40 rows
+or larger.  (To find out the size of your terminal on a POSIX system,
+you can type `stty size` at a command prompt.) If it's not big enough,
+try decreasing the font size. You can read about and/or share
+recommended terminal settings in [this GitHub
 issue](https://github.com/swarm-game/swarm/issues/447).
 
 - [Installing via binaries](#installing-via-binaries)
@@ -38,7 +33,7 @@ chmod +x ./swarm          # make it executable
 echo $PATH | tr ':' '\n'  # choose one of the listed directories
 mv ./swarm /my/chosen/bin/directory/
 ```
-You will also need to extract the data to your local Swarm folder so
+You will also need to extract the data directory to a local Swarm folder so
 the executable can find it:
 ```bash
 mkdir -p ~/.local/share/swarm/
@@ -54,6 +49,10 @@ able to install with
 
     cabal install swarm
 
+Currently Swarm supports GHC 9.2, 9.4, or 9.6 (GHC 9.8 support should
+be coming soon; it's possible that it already supports 9.8 but we
+forgot to update this message).
+
 If you don't already have the `cabal` tool, first [install
 `ghcup`](https://www.haskell.org/ghcup/), then run `ghcup install
 cabal` (if `cabal` was not automatically downloaded as part of