diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8a773187..b96d3a8c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -91,6 +91,7 @@ option(UNIVRSL_BUILD_NUMERICS                    "Set to ON to build all the num
 option(UNIVRSL_BUILD_BENCHMARKS                  "Set to ON to build all the benchmark components"     OFF)
 option(UNIVRSL_BUILD_MIXEDPRECISION_SDK          "Set to ON to build the mixed-precision SDK"          OFF)
 option(UNIVRSL_BUILD_COMPLEX                     "Set to ON to build complex support components"       OFF)
+option(UNIVRSL_BUILD_CONCURRENCY                 "Set to ON to build concurrent components"            OFF)
 
 # or, build individual components
 # utilities and educational examples
@@ -609,8 +610,9 @@ if(UNIVRSL_BUILD_ALL)
 	set(UNIVRSL_BUILD_TYPE_HIERARCHY ON)
 	set(UNIVRSL_BUILD_MIXEDPRECISION_SDK ON)
 	set(UNIVRSL_BUILD_APP_ENVIRONMENT ON)
-# for the moment, explicitely turn COMPLEX off until we have a standalone complex<> solution
-set(UNIVRSL_BUILD_COMPLEX OFF)
+	# for the moment, explicitely turn COMPLEX off until we have a standalone complex<> solution
+	set(UNIVRSL_BUILD_COMPLEX OFF)
+	set(UNIVRSL_BUILD_CONCURRENCY ON)
 
 	# build the BLAS test/verification suites
 	set(UNIVRSL_BUILD_LINEAR_ALGEBRA_BLAS ON)
@@ -635,6 +637,7 @@ if(UNIVRSL_BUILD_CI)
 	set(UNIVRSL_BUILD_MIXEDPRECISION_SDK OFF)
 	set(UNIVRSL_BUILD_APP_ENVIRONMENT ON)
 	set(UNIVRSL_BUILD_COMPLEX OFF)
+	set(UNIVRSL_BUILD_CONCURRENCY OFF)
 endif(UNIVRSL_BUILD_CI)
 
 # core demonstration example applications that use the library
@@ -647,17 +650,17 @@ endif(UNIVRSL_BUILD_DEMONSTRATION)
 
 # enable complex environment components
 if(UNIVRSL_BUILD_COMPLEX)
-# right now, the complex arithmetic and math functions (imag, real, conj)
-# are maintained in the individual number system regression suites.
-# Their respective build systems will use UNIVRSL_BUILD_COMPLEX to add/remove
-# the complex<> regression suites.
-set(UNIVRSL_BUILD_APPLICATIONS ON)
-set(UNIVRSL_BUILD_NUMBER_FIXPNTS ON)
-set(UNIVRSL_BUILD_NUMBER_CFLOATS ON)
-set(UNIVRSL_BUILD_NUMBER_POSITS ON)
-# I am leaving this segment here as a pattern that might drive the development
-# of a complex<> replacement that might need its own regression suite 
-# independent of user-defined types.
+	# right now, the complex arithmetic and math functions (imag, real, conj)
+	# are maintained in the individual number system regression suites.
+	# Their respective build systems will use UNIVRSL_BUILD_COMPLEX to add/remove
+	# the complex<> regression suites.
+	set(UNIVRSL_BUILD_APPLICATIONS ON)
+	set(UNIVRSL_BUILD_NUMBER_FIXPNTS ON)
+	set(UNIVRSL_BUILD_NUMBER_CFLOATS ON)
+	set(UNIVRSL_BUILD_NUMBER_POSITS ON)
+	# I am leaving this segment here as a pattern that might drive the development
+	# of a complex<> replacement that might need its own regression suite 
+	# independent of user-defined types.
 endif(UNIVRSL_BUILD_COMPLEX)
 
 if(UNIVRSL_BUILD_NUMBERS)
diff --git a/playground/CMakeLists.txt b/playground/CMakeLists.txt
index 506f5ca4..9c073a37 100644
--- a/playground/CMakeLists.txt
+++ b/playground/CMakeLists.txt
@@ -2,6 +2,8 @@
 
 set(COMPLEX_SRCS complex.cpp)
 
+set(CONCURRENCY_SRCS concurrency.cpp)
+
 set(REAL_SRCS efunc_posits.cpp 
 	 efunc_valids.cpp 
 	 gismo_test.cpp 
@@ -10,16 +12,22 @@ set(REAL_SRCS efunc_posits.cpp
 	 type_test.cpp
 	 float_to_decimal_string.cpp
 	 lazy_evaluation.cpp
-	 concurrency.cpp
 	 expression_templates.cpp
 )
 
 compile_all("true" "playground" "Playground" "${REAL_SRCS}")
 
 # NOTE: AppleClang as XCode14 and Xcode15 have std::complex libs that do not support user defined types5
-if(BUILD_COMPLEX)
+if(UNIVRSL_BUILD_COMPLEX)
     message(STATUS "Adding playground complex experiment")
-    compile_all("true" "playground_cmplx" "Complex/Playground" "${COMPLEX_SRCS}")
-else(BUILD_COMPLEX)
+    compile_all("true" "play_cmplx" "Complex/Playground" "${COMPLEX_SRCS}")
+else(UNIVRSL_BUILD_COMPLEX)
     message(STATUS "Removing complex environment experiment in the Playground")
-endif(BUILD_COMPLEX)
+endif(UNIVRSL_BUILD_COMPLEX)
+
+if(UNIVRSL_BUILD_CONCURRENCY)
+    message(STATUS "Adding playground concurrency experiment")
+    compile_all("true" "play_conc" "Concurrency/Playground" "${COMPLEX_SRCS}")
+else(UNIVRSL_BUILD_CONCURRENCY)
+    message(STATUS "Removing concurrency experiment in the Playground")
+endif(UNIVRSL_BUILD_CONCURRENCY)
diff --git a/tools/cmake/summary.cmake b/tools/cmake/summary.cmake
index 528886f2..8b98db19 100644
--- a/tools/cmake/summary.cmake
+++ b/tools/cmake/summary.cmake
@@ -102,6 +102,7 @@ function(universal_print_configuration_summary)
     universal_status("  UNIVRSL_BUILD_BENCHMARKS                 :   ${UNIVRSL_BUILD_BENCHMARKS}")
     universal_status("  UNIVRSL_BUILD_MIXEDPRECISION_SDK         :   ${UNIVRSL_BUILD_MIXEDPRECISION_SDK}")
     universal_status("  UNIVRSL_BUILD_COMPLEX                    :   ${UNIVRSL_BUILD_COMPLEX}")
+    universal_status("  UNIVRSL_BUILD_CONCURRENCY                :   ${UNIVRSL_BUILD_CONCURRENCY}")
     universal_status("")
     universal_status("  UNIVRSL_BUILD_CMD_LINE_TOOLS             :   ${UNIVRSL_BUILD_CMD_LINE_TOOLS}")
     universal_status("  UNIVRSL_BUILD_EDUCATION                  :   ${UNIVRSL_BUILD_EDUCATION}")