diff --git a/compiler/builtins.js b/compiler/builtins.js
index 23b131f7..3ac8afcd 100644
--- a/compiler/builtins.js
+++ b/compiler/builtins.js
@@ -364,13 +364,13 @@ export const BuiltinFuncs = function() {
   const prngSeed0 = (Math.random() * (2 ** 30)) | 0, prngSeed1 = (Math.random() * (2 ** 30)) | 0;
 
   const prng = ({
-    'lcg32_glibc': {
+    'lcg32': {
       globals: [ Valtype.i32 ],
       locals: [],
       returns: Valtype.i32,
       wasm: [
+        // use glibc/musl's constants
         // seed = (MULTIPLIER * seed + INCREMENT) % MODULUS
-        // MULTIPLIER * state0
         [ Opcodes.global_get, 0 ],
         number(1103515245, Valtype.i32),
         [ Opcodes.i32_mul ],
@@ -380,30 +380,8 @@ export const BuiltinFuncs = function() {
         [ Opcodes.i32_add ],
 
         // % MODULUS
-        number(2 ** 31, Valtype.i32),
-        [ Opcodes.i32_rem_s ],
-
-        // state0 =
-        [ Opcodes.global_set, 0 ],
-
-        // state0
-        [ Opcodes.global_get, 0 ],
-      ],
-    },
-    'lcg32_minstd': {
-      globals: [ Valtype.i32 ],
-      locals: [],
-      returns: Valtype.i32,
-      wasm: [
-        // seed = (MULTIPLIER * seed + INCREMENT) % MODULUS
-        // MULTIPLIER * state0
-        [ Opcodes.global_get, 0 ],
-        number(48271, Valtype.i32),
-        [ Opcodes.i32_mul ],
-
-        // % MODULUS
-        number((2 ** 31) - 1, Valtype.i32),
-        [ Opcodes.i32_rem_s ],
+        number(0x7fffffff, Valtype.i32),
+        [ Opcodes.i32_and ],
 
         // state0 =
         [ Opcodes.global_set, 0 ],
@@ -484,11 +462,6 @@ export const BuiltinFuncs = function() {
         // state0 = s1
         [ Opcodes.global_set, 0 ],
 
-        // // s1 * 0x2545F4914F6CDD1D
-        // [ Opcodes.local_get, 0 ],
-        // [ Opcodes.i64_const, 0x9d, 0xba, 0xb3, 0xfb, 0x94, 0x92, 0xfd, 0xa2, 0x25 ],
-        // [ Opcodes.i64_mul ]
-
         // s1
         [ Opcodes.local_get, 0 ],
       ],
diff --git a/package.json b/package.json
index 73a95e31..cc1a3d1d 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "porffor",
   "description": "a basic experimental wip aot optimizing js -> wasm engine/compiler/runtime in js",
-  "version": "0.50.27",
+  "version": "0.50.28",
   "author": "CanadaHonk",
   "license": "MIT",
   "scripts": {},
diff --git a/runner/index.js b/runner/index.js
index 84b0d3e0..e779ffad 100644
--- a/runner/index.js
+++ b/runner/index.js
@@ -1,6 +1,6 @@
 #!/usr/bin/env node
 import fs from 'node:fs';
-globalThis.version = '0.50.27';
+globalThis.version = '0.50.28';
 
 // deno compat
 if (typeof process === 'undefined' && typeof Deno !== 'undefined') {
@@ -63,7 +63,7 @@ if (process.argv.includes('--help')) {
       pgo: 'Enable PGO (profile-guided optimization)',
       'profile-compiler': 'Log general compiler performance (on by default when compiling to a file)',
       valtype: 'Valtype to use (i32|i64|\x1B[1mf64\x1B[0m)',
-      prng: 'PRNG algorithm to use (lcg32_glibc|lcg32_minstd|xorshift32+|xorshift64+|\x1B[1mxorshift128+\x1B[0m|xoroshiro128+|xoshiro128+)',
+      prng: 'PRNG algorithm to use (lcg32|xorshift32+|xorshift64+|\x1B[1mxorshift128+\x1B[0m|xoroshiro128+|xoshiro128+)',
       allocator: 'Allocator to use (oneshot|\x1B[1mchunk\x1B[0m)',
       'exception-mode': 'Exception mode to use (lut|\x1B[1mstack\x1B[0m)',
       fastLength: 'Spec non-compliant optimization to make .length faster',